Demographic changes are nowadays one of the biggest challenges facing developing societies and although they are mainly the result of processes that have been taking place for many years, their effects – both economic and social – are now beginning to be felt now. The observed trends in the field of factors affecting the size and structure of the population, such as: a decrease in fertility, an increase in life expectancy, the creation and breakdown of families, movement of population, determine the labour market, education, health care, and also affect the nature of consumption or the social security market. It can be concluded that along with the progressing demographic changes, the areas of social and economic life that they condition will expand.

Detailed statistical data are grouped into 21 thematic chapters. The study is supplemented by two review tables with the most important data on the Voivodship in 2000, 2010, 2015 and 2021, as well as selected information on the Voivodship against the background of the country in 2021. The statistical material contains general comments with explanations regarding the terminology, methodology and scope of information.

The publication presents statistical data for 2020 that characterize the demographic and socio-economic situation of the districts of the Capital City of Warsaw and is a supplement to the Yearbook.

Detailed statistical data were grouped in 21 thematic chapters preceded by general notes containing explanations regarding the terminology, methodology and scope of information. The statistical material is enriched with a graphic illustration in the form of charts and cartograms. The publication was prepared in the Polish-English language version.